<template>

  <view >
    <my-address></my-address>
  <view class="cart-container" v-if="cart.length !== 0">
    <!-- 购物车商品列表的标题区域 -->
       <view class="cart-title">
         <!-- 左侧的图标 -->
         <uni-icons type="shop" size="18"></uni-icons>
         <!-- 描述文本 -->
         <text class="cart-title-text">购物车</text>
       </view> 
    <!-- 商品列表区域 -->
    <uni-swipe-action>
       <block v-for="(goods, i) in cart" :key="i">
      <uni-swipe-action-item :right-options="options"  @click="swipeActionClickHandler(goods)">
        <my-goods :goods="goods" :showRN="true" @num-change="numberChangeHandler" @radio-change="radioChangeHandler"></my-goods>
      </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
  </view>  
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view> 
 <my-settle></my-settle>
   <!-- 空白购物车区域 -->
   
  </view> 
</template>

<script>
   import {mapState,mapGetters,mapMutations} from 'vuex'
  export default {
  
    data() {
      return {
        options:[{
          text:'删除',
          style:{
            backgroundColor:'#C00000'
          }
        }]
      };
    },
    computed:{
        // 将 m_cart 模块中的 total 映射为当前页面的计算属性
         ...mapGetters('m_cart', ['total']), 
          // 将 m_cart 模块中的 cart 数组映射到当前页面中使用
           ...mapState('m_cart',['cart'])
    },
    onShow() {
       // 在页面刚展示的时候，设置数字徽标
       this.setBadge()
    },
    watch:{
      total(){
        this.setBadge()
      }
    },
    methods: {
       ...mapMutations('m_cart', ['updateGoodsState','updateGoodsCount','removeGoodsById']),
   setBadge() {
      // 调用 uni.setTabBarBadge() 方法，为购物车设置右上角的徽标
      uni.setTabBarBadge({
         index: 2, // 索引
         text: this.total + '' // 注意：text 的值必须是字符串，不能是数字
      })
   }, 
    // 商品的勾选状态发生了变化
  radioChangeHandler(e) {
    this.updateGoodsState(e)
  },
  // 商品的勾选状态发生了变化
  numberChangeHandler(e) {
    this.updateGoodsCount(e)
  },
  // 点击了滑动操作按钮
  swipeActionClickHandler(goods) {
    this.removeGoodsById(goods.goods_id)
  }
  
}
  }
</script>

<style lang="scss">
  .goods-item{
    background-color: #FFFFFF;
  }
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.goods-item-right {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;

  .goods-name {
    font-size: 13px;
  }
.goods-info-box{
  display: flex;
  justify-content:space-between ;
   .goods-price {
      font-size: 16px;
      color: #c00000;
    }
}
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
